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660V VFD converter AC medium voltage variable frequency drives for mixers

660V VFD converter AC medium voltage variable frequency drives for mixers

Place of Origin : China
Brand Name : GANDO
Certification : CE
Model Number : 660V-G7-__KW
MOQ : 1 set
Delivery Time : 2 days
Payment Terms : TT, L/C, Western Union, Paypa
Supply Ability : 200 sets per week
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660V AC Medium Voltage VFD Frequency Converter Drives for Mixers

Mixers are used in a wide range of industries to combine different materials together to form one final product from the mixing process. The mixed materials can be mixed from low to high viscosity, high to low viscosity, or mixed at a constant viscosity. Mixtures may require the mixer to operate at various speeds throughout the mixing process. The properties of the mixed material are a primary consideration when defining mixing applications.

Application Challenges

· High starting torque
High viscosity materials will require a high amount of starting torque to get the mixer blades rotating.

· Mixture status
Determine the viscosity of the mixture while the mixer is operating.

· Trip-less operation
The drive must be capable of continuous operation or automatic restart after a momentary power loss or fault (< 5 ms).

· Multiple mixing speeds
Capable of changing mixing speeds throughout the mixing process for different mixtures.

· Equipment protection
Capable of detecting seizing or jamming of the mixing equipment (shaft, mixer blades, mixer paddles, etc.) and respond to avoid damage to the equipment.

Features of G7 matching mixer application



Open Loop Vector and V/Hz Control with Torque Compensation

Provides excellent breakaway torque for thick materials and constant torque to maintain mixing speeds under heavy loads.

Overtorque Detection

Provides early warning of damaging torque levels as a result of seizing mixer blades.

Torque Reference programmable to an analog output

The applied mixing torque is fine tuned or adjustable for different material.

Preset frequency reference

Preset mixing patterns can be established for different materials.

Auto-Restart after momentary power loss

Mixing can quickly restart after fault or momentary power loss. This keeps perishable foods from spoiling in process.

Power loss Ride-Through

The mixing process in not interrupted during brief power loss (< 5 ms).

Power range of G7 VFD

Voltage: 660VAC (450VAC – 690VAC)

Power: 22kw/30HP – 400kw/535HP

Specification of G7 VFD



Input frequency


Output frequency


Overload current

150% rated current 1min.

Control mode

Close-loop vector control, sensor-less vector control, V/F control

Starting torque

150% 1hz (with PG 0hz)

Control precision

±0.2% (With PG ±0.02%)

Torque precision


Setting frequency resolution

Digital command 0.01hz; analog command 0.03hz/60hz

Output frequency resolution


Frequency setting signal


Protection function

Over voltage, under voltage, over load, relay, overheat speed stall, grounding, instant power cut compensation( within 2 sec for operation mode. Continue to operate after the power is available), Charging protection( not to display when the dc voltage of main circuit is less than 50v)



Cooling mode

forced air cooling


Less than 0.2g for 20hz

Ambient temperature / Humidity

-10 Degrees~+40 Degrees / 20~90%Rh (no condensation)


A variable-frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor. A variable frequency drive is a specific type of adjustable-speed drive. Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives, microdrives or inverter drives. Since the voltage is varied along with frequency, these are sometimes also called VVVF (variable voltage variable frequency) drives.

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